Primordial Radioactivity and Prebiotic Chemical Evolution: Effect of gamma Radiation on Formamide-Based Synthesis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00536901" target="_blank" >RIV/61388955:_____/20:00536901 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/20:10421638 RIV/68407700:21340/20:00345626

Výsledek na webu

<a href="http://hdl.handle.net/11104/0314653" target="_blank" >http://hdl.handle.net/11104/0314653</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcb.0c05233" target="_blank" >10.1021/acs.jpcb.0c05233</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Primordial Radioactivity and Prebiotic Chemical Evolution: Effect of gamma Radiation on Formamide-Based Synthesis

Popis výsledku v původním jazyce

Although the effect of ionizing radiation on prebiotic chemistry is often overlooked, primordial natural radioactivity might have been an important source of energy for various chemical transformations. Estimates of the abundances of short-lived radionuclides on early Earth suggest that the primordial intensity of endogenous terrestrial radioactivity was up to 4 x 10(3) times higher than it is today. Therefore, we assume that chemical substances in contact with radioactive rocks should therefore undergo radiolysis. The calculations are followed by research investigating the influence of ionizing gamma radiation on basic prebiotic substances, including formamide mixed with various clays, which might have played the role of a catalyst and an agent that partially blocked radiation that was potentially destructive for the products. Our explorations of this effect have shown that the irradiation of formamide-clay mixtures at doses of similar to 6 kGy produces significant amounts of urea (up to the maximal concentration of approximately 250 mg L-1), which plays a role in HCN-based prebiotic chemistry.

Název v anglickém jazyce

Primordial Radioactivity and Prebiotic Chemical Evolution: Effect of gamma Radiation on Formamide-Based Synthesis

Popis výsledku anglicky

Although the effect of ionizing radiation on prebiotic chemistry is often overlooked, primordial natural radioactivity might have been an important source of energy for various chemical transformations. Estimates of the abundances of short-lived radionuclides on early Earth suggest that the primordial intensity of endogenous terrestrial radioactivity was up to 4 x 10(3) times higher than it is today. Therefore, we assume that chemical substances in contact with radioactive rocks should therefore undergo radiolysis. The calculations are followed by research investigating the influence of ionizing gamma radiation on basic prebiotic substances, including formamide mixed with various clays, which might have played the role of a catalyst and an agent that partially blocked radiation that was potentially destructive for the products. Our explorations of this effect have shown that the irradiation of formamide-clay mixtures at doses of similar to 6 kGy produces significant amounts of urea (up to the maximal concentration of approximately 250 mg L-1), which plays a role in HCN-based prebiotic chemistry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Physical Chemistry B

ISSN

1520-6106

e-ISSN

—

Svazek periodika

124

Číslo periodika v rámci svazku

41

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

8951-8959

Kód UT WoS článku

000582569100001

EID výsledku v databázi Scopus

2-s2.0-85093539181